20703040

素因数分解:

$2^6\times 5^1\times {\mathrm{31}}^1\times {\mathrm{2087}}^1$

素因数の和:2135

約数の個数: 56

約数和(自身を含む): 50913792

約数和(自身を除く): 30210752

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 155, 160, 248, 310, 320, 496, 620, 992, 1240, 1984, 2087, 2480, 4174, 4960, 8348, 9920, 10435, 16696, 20870, 33392, 41740, 64697, 66784, 83480, 129394, 133568, 166960, 258788, 323485, 333920, 517576, 646970, 667840, 1035152, 1293940, 2070304, 2587880, 4140608, 5175760, 10351520, 20703040]

約数ペア:

[(1, 20703040), (2, 10351520), (4, 5175760), (5, 4140608), (8, 2587880), (10, 2070304), (16, 1293940), (20, 1035152), (31, 667840), (32, 646970), (40, 517576), (62, 333920), (64, 323485), (80, 258788), (124, 166960), (155, 133568), (160, 129394), (248, 83480), (310, 66784), (320, 64697), (496, 41740), (620, 33392), (992, 20870), (1240, 16696), (1984, 10435), (2087, 9920), (2480, 8348), (4174, 4960)]